I use petwipes, as needed.
 
Two of my three boys get regular baths.
D and Mickey each get a bath at least one time per month.
 
They get baths because bathing them helps me.  I am not allergic to our F3 boy Jarvis, but I am somewhat allergic to D, and a lot allergic to Mickey.  We did not know I would be allergic when we brought them home- I had never had cat allergies before, and I worked for a Vet for 3 years.  
 
 I put about 3" of warm water in the bath tub, and I wear a swimsuit and get in with them, and I hold on to them with one hand, and wash them with the other.  It takes about 2 minutes for each of them to get a bath.  Neither likes it, but both of them are pretty good.  They both yowl, but neither of them try to get away, and they don't bite or scratch. They stand with their front paws on the edge of the tub, and their back paws in the tub, and I get them wet quickly, soap them up with kitten shampoo quickly, and then rinse them carefully.  I don't wash their heads, I don't want to get soap in their eyes or water in their ears.  I talk to them both the whole time, and towel them off lightly when I am done.    
 
Do they like it?  No. But all in all they are pretty good.